tailodds FORECAST
Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Dulles → Portland via Seattle: arrives on time 74%

  1. 18:14 IAD → 21:09 SEA
    AS 737 · Alaska · 5h 55m · 58% on time, 1.6% cancelled
  2. 2h 17m layover in Seattle (SEA) · 45 min minimum on one ticket
  3. 23:26 SEA → 00:22 PDX +1 day
    AS 2377 · Alaska, flown by Horizon · 56m · 86% on time, 4.5% cancelled

Total trip 9h 08m, scheduled departure to arrival (Portland is 3 h behind Dulles). Times are local. Both flew on 22 of the last 56 days.

Makes the connection92%The first flight arrived more than 92 minutes late on 8% of the days it flew: too late for the 45-minute minimum connection on a 2h 17m layover.
Arrives on time74%First flight not cancelled (1.6% are) × connection made (92%) × second flight not cancelled (4.5% are) and within 15 minutes (86%).
Total trip9h 08mIAD 18:14 to PDX 00:22, layover included

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.